Numerical investigation on the ablative Kelvin-Helmholtz instability

Numerical investigation on the ablative Kelvin-Helmholtz instability
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烧蚀开尔文-亥姆霍兹不稳定性的数值研究

DOI:
10.1209/0295-5075/87/54005
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发表时间:
2009-09
期刊:
EPL (Europhysics Letters)
影响因子:
--
通讯作者:
--
中科院分区:
其他
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通过数值模拟,详细分析了烧蚀对Kelvin-Helmholtz不稳定性的影响。对一维烧蚀效应进行了分析,并介绍了几种典型的烧蚀剖面。我们发现,烧蚀效应降低了线性增长率和频率。热传导通过抑制微扰的增长和传播来稳定Kelvin-Helmholtz不稳定性。在弱非线性区域,烧蚀效应抑制了二次和三次谐波的出现和增长。
The ablative effect on the Kelvin-Helmholtz instability is attemptly analyzed by numerical simulation. One-dimensional ablative effect is analyzed and some typical profiles are introduced for the two-dimensional simulations. We found that the linear growth rate and frequency are reduced by the ablative effect. The heat conduction stabilize the Kelvin-Helmholtz instability by suppressing the growth and transmission of the perturbation. In the weakly nonlinear regime, the ablative effect suppresses the appearance and growth of the second and third harmonics.
DOI: 10.1103/physreve.65.057401
发表时间: 2002-05
期刊: Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子: --
作者:
W. Ye;Weiyan Zhang;X. He
通讯作者: W. Ye;Weiyan Zhang;X. He
DOI: 10.1142/9781848161696_0005
发表时间: 2001
期刊: --
影响因子: --
作者:
K. Wali
通讯作者: K. Wali